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Radhika Tippani,Anil Kumar Vemunoori,Rajesh Yarra,Rama Swamy Nanna,Sadanandam Abbagani,Christopher Thammidala 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.6
A simple and highly efficient protocol has been developed for in vitro regeneration of Pterocarpus marsupium using immature zygotic embryo (IZE) as explant. The highest frequency of shoot regeneration (93.8%) was obtained on Murashige and Skoog (MS) medium supplemented with 3.0 mg·L-1 6-benzylaminopurine (BA) and 0.5 mg·L-1 indole-3-acetic acid (IAA), wherein maximum of 17.3 ± 0.9 shoots per explant was induced. When these cultures were sub-cultured on MS medium supplemented with 1.0 mg·L-1 BA, more shoots (27.2 ± 1.1) with an average shoot length of 4.5 cm were observed. The highest rooting (70.8%) and maximum number of roots (3.2 ± 0.3) per shoot were obtained when shoots were dipped in 3.0 mg·L-1 indol-3-butyric acid (IBA) solution for 24 hours and further cultured on half-strength MS medium. Plantlets obtained in vitro were transferred to the field after being hardened with a 74%survival rate. Analysis of regenerated plantlets using inter-simple sequence repeat (ISSR) markers confirmed that there was no genetic variability. All ISSR banding profiles from regenerated plantlets were monomorphic and similar to those of the mother plant. This protocol might be helpful for the mass multiplication and in vitro conservation of P. marsupium.
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Effect of Physical Parameterization Schemes on Track and Intensity of Cyclone LAILA Using WRF Model
Radhika D. Kanase,P. S. Salvekar 한국기상학회 2015 Asia-Pacific Journal of Atmospheric Sciences Vol.51 No.3
The objective of the present study is to investigate in detail the sensitivity of cumulus parameterization (CP), planetary boundary layer (PBL) parameterization, microphysics parameterization (MP) on the numerical simulation of severe cyclone LAILA over Bay of Bengal using Weather Research & Forecasting (WRF) model. The initial and boundary conditions are supplied from GFS data of 1o × 1o resolution and the model is integrated in three ‘twoway’ interactive nested domains at resolutions of 60 km, 20 km and 6.6 km. Total three sets of experiments are performed. First set of experiments include sensitivity of Cumulus Parameterization (CP) schemes, while second and third set of experiments is carried out to check the sensitivity of different PBL and Microphysics Parameterization (MP) schemes. The fourth set contains initial condition sensitivity experiments. For first three sets of experiments, 0000 UTC 17 May 2010 is used as initial condition. In CP sensitivity experiments, the track and intensity is well simulated by BettsMiller-Janjic (BMJ) schemes. The track and intensity of LAILA is very sensitive to the representation of large scale environmental flow in CP scheme as well as to the initial vertical wind shear values. The intensity of the cyclone is well simulated by YSU scheme and it depends upon the mixing treatment in and above PBL. Concentration of frozen hydrometeors, such as graupel in WSM6 MP scheme and latent heat released during auto conversion of hydrometeors may be responsible for storm intensity. An additional set of experiments with different initial vortex intensity shows that, small differences in the initial wind fields have profound impact on both track and intensity of the cyclone. The representation of the mid-tropospheric heating in WSM6 is mainly controlled by amount of graupel hydrometeor and thus might be one of the possible causes in modulating the storm’s intensity.
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Adverse events associated with third space endoscopy: Diagnosis and management
Radhika Chavan,Zaheer Nabi,Duvuur Nageshwar Reddy 소화기인터벤션의학회 2020 Gastrointestinal Intervention Vol.9 No.2
Third space endoscopy (TSE) is a ‘magnum opus’ in the field of therapeutic gastrointestinal (GI) endoscopy that has led to a paradigm shift in the management of various GI disorders. TSE or submucosal endoscopy is based on the concept of mucosal flap safety valve technique. Since, the basic principle is more or less similar for all the TSE procedures, the nature of major adverse events (AE) also shares some similarity across the spectrum of TSE procedures. These AE include insufflation related AE, bleeding, perforation, and infection. Insufflation related events are among the most commonly encountered AEs. However, majority of the insufflation related AE do not require a specific intervention and not regarded as AE in true sense. Identification of risk factors and adaptation of preventative strategies may help in reducing the incidence of AE. At the same time, early recognition and expeditious management is paramount to reduce morbidities associated with these AE. Due to heterogeneity in the reporting of AE, it is difficult to estimate the actual incidence of AE and compare the results between different studies. Therefore, universal adaptation of a standard reporting system is required to quantify the true incidence of AE for each procedure.
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MHD Boundary Layer Flow and Heat Transfer of Rotating Dusty Nanofluid over a Stretching Surface
Radhika Manghat,Siddabasappa 경북대학교 자연과학대학 수학과 2020 Kyungpook mathematical journal Vol.60 No.4
The aim of this study was to analyze the momentum and heat transfer of a rotating nanofluid with conducting spherical dust particles. The fluid flows over a stretching surface under the influence of an external magnetic field. By applying similarity transformations, the governing partial differential equations were trans-formed into nonlinear coupled ordinary differential equations. These equations were solved with the built-in function bvp4c in MATLAB. Moreover, the effects of the rotation parameter ω, magnetic field parameter M, mass concentration of the dust particles α, and volume fraction of thenano particles φ, on the velocity and temperature profiles of the fluid and dust particles were considered. The results agree well with those in published papers. According to the result the hikes in the rotation parameter ω decrease the local Nusselt number, and the increasing volume fraction of the nano particles φ increases the local Nusselt number. Moreover the friction factor along the x and y axes increases with increasing volume fraction of the nano particles φ.
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Radhika Dhakal,백광현 한국원예학회 2014 Horticulture, Environment, and Biotechnology Vol.55 No.1
Tomatoes (Solanum lycopersicum L.) are known as a super food because they contain many compoundsbeneficial to human health. To elucidate the role of specific wavelength of light on the accumulation of free aminoacids and γ-aminobutyric acid (GABA) in postharvest tomato fruits, mature green tomato fruits were treated withdarkness, or blue or red light by using light emitting diode (LED) for seven days. All free amino acids, exceptglutamic and aspartic acids, increased more in fruits treated with blue light than in those treated with either darknessor red light. The GABA, a non-protein amino acid and having health beneficial effects, increased in the blue lighttreatment with the maximum content being observed on the third day. Taken together, these findings indicate thatirradiation with blue light has an effect in increasing the GABA contents in postharvest tomato fruits.
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Adverse events associated with third space endoscopy: Diagnosis and management
Radhika Chavan,Zaheer Nabi,Duvuur Nageshwar Reddy 소화기인터벤션의학회 2020 International journal of gastrointestinal interven Vol.9 No.2
Third space endoscopy (TSE) is a ‘magnum opus’ in the field of therapeutic gastrointestinal (GI) endoscopy that has led to a paradigm shift in the management of various GI disorders. TSE or submucosal endoscopy is based on the concept of mucosal flap safety valve technique. Since, the basic principle is more or less similar for all the TSE procedures, the nature of major adverse events (AE) also shares some similarity across the spectrum of TSE procedures. These AE include insufflation related AE, bleeding, perforation, and infection. Insufflation related events are among the most commonly encountered AEs. However, majority of the insufflation related AE do not require a specific intervention and not regarded as AE in true sense. Identification of risk factors and adaptation of preventative strategies may help in reducing the incidence of AE. At the same time, early recognition and expeditious management is paramount to reduce morbidities associated with these AE. Due to heterogeneity in the reporting of AE, it is difficult to estimate the actual incidence of AE and compare the results between different studies. Therefore, universal adaptation of a standard reporting system is required to quantify the true incidence of AE for each procedure.
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Radhika Ambatipudi,Hari Babu Kotte,Kent Bertilsson 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper addresses radiated EMI issues in Coreless PCB step-down transformers used for power transfer applications. In case of SMPS circuits, since the waveforms are not sinusoidal in nature, most of the radiated emissions are not only from fundamental frequency component but also from harmonic contents. According to antenna theory, radiated EMI for three different power transformers of different radii were estimated for fundamental frequency of 2㎒ to 300㎒. The computations were made for both sinusoidal and square wave excitations and at a load power of 20W. The calculated radiated power obtained for simulated waveforms and for practical measured current waveforms are in good agreement with each other up to certain bandwidth. These computational results confirm that radiated power can be reduced in three layered 2:1 transformer compared to two layered 2:1 transformer. Also the radiated emissions are negligible in case of sinusoidal excitations compared to square wave excitations.
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Radhika, A.,Shunmugalatha, A. The Korean Institute of Power Electronics 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.2
The pumping of electric power from photovoltaic (PV) farms is normally carried out using transformers, which require heavy mounting structures and are thus costly, less efficient, and bulky. Therefore, transformerless schemes are developed for the injection of power into the grid. Compared with the H4 inverter topology, the H6 topology is a better choice for pumping PV power into the grid because of the reduced common mode current. This paper presents how the perturb and observe (P&O) algorithm for maximum power point tracking (MPPT) can be implemented in the H6 inverter topology along with the improved sinusoidal current injected to the grid at unity power factor with the average current mode control technique. On the basis of the P&O MPPT algorithm, a power reference for the present insolation level is first calculated. Maintaining this power reference and referring to the AC sine wave of bus bars, a sinusoidal current at unity power factor is injected to the grid. The proportional integral (PI) controller and fuzzy logic controller (FLC) are designed and implemented. The FLC outperforms the PI controller in terms of conversion efficiency and injected power quality. A simulation in the MATLAB/SIMULINK environment is carried out. An experimental prototype is built to validate the proposed idea. The dynamic and steady-state performances of the FLC controller are found to be better than those of the PI controller. The results are presented in this paper.
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